RoutedEvents: Tunneled Key Press : RoutedCommand « Windows Presentation Foundation « C# / CSharp Tutorial






<Window x:Class="RoutedEvents.TunneledKeyPress"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="TunneledKeyPress" Height="400" Width="400" PreviewKeyDown="SomeKeyPressed" >
  <StackPanel>
    <Label Margin="5" BorderBrush="Black" BorderThickness="1" HorizontalContentAlignment="Stretch"
           PreviewKeyDown="SomeKeyPressed">
      <StackPanel PreviewKeyDown="SomeKeyPressed">
        <TextBlock Margin="3" HorizontalAlignment="Center" PreviewKeyDown="SomeKeyPressed">
          Image and text label
        </TextBlock>
        <Image Source="c:\image.jpg" Stretch="None" PreviewKeyDown="SomeKeyPressed"/>
        <DockPanel Margin="10" PreviewKeyDown="SomeKeyPressed"> 
          <TextBlock Margin="3" PreviewKeyDown="SomeKeyPressed">Type here:</TextBlock>
          <TextBox PreviewKeyDown="SomeKeyPressed" KeyDown="SomeKeyPressed"></TextBox>
        </DockPanel>
      </StackPanel>
    </Label>
    <ListBox Margin="5" Name="lstMessages"></ListBox>
    <CheckBox Margin="5" Name="chkHandle">Handle first event</CheckBox>
    <Button Click="cmdClear_Click" HorizontalAlignment="Right" Margin="5" Padding="3">Clear List</Button>
  </StackPanel>
</Window>
//File:Window.xaml.cs

using System;
using System.Collections.Generic;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;

namespace RoutedEvents
{
    public partial class TunneledKeyPress : System.Windows.Window
    {
        public TunneledKeyPress()
        {
            InitializeComponent();
        }

        protected int eventCounter = 0;

        private void SomeKeyPressed(object sender, RoutedEventArgs e)
        {
            eventCounter++;
            string message = "#" + eventCounter.ToString() + ":\r\n" +
                " Sender: " + sender.ToString() + "\r\n" +
                " Source: " + e.Source + "\r\n" +
                " Original Source: " + e.OriginalSource + "\r\n" +
                " Event: " + e.RoutedEvent;
            lstMessages.Items.Add(message);
            e.Handled = (bool)chkHandle.IsChecked;
        }

        private void cmdClear_Click(object sender, RoutedEventArgs e)
        {
            eventCounter = 0;
            lstMessages.Items.Clear();
        }
    }
}
WPF Routed Events Tunneled Key Press








24.136.RoutedCommand
24.136.1.Bubble routed events, and write an event handler for a routed event.Bubble routed events, and write an event handler for a routed event.
24.136.2.Create a custom RoutedCommand, the CommandBinding objects, and the KeyBinding objects in code.Create a custom RoutedCommand, the CommandBinding objects, and the KeyBinding objects in code.
24.136.3.Convert RoutedEventArgs.OriginalSource to event senderConvert RoutedEventArgs.OriginalSource to event sender
24.136.4.Get RoutedEvent NameGet RoutedEvent Name
24.136.5.Bind event handler to button with RoutedEventHandlerBind event handler to button with RoutedEventHandler
24.136.6.Custom Command by KeyGesture and RoutedUICommandCustom Command by KeyGesture and RoutedUICommand
24.136.7.RoutedEvents: Button Mouse Up EventRoutedEvents: Button Mouse Up Event
24.136.8.RoutedEvents: Drag And DropRoutedEvents: Drag And Drop
24.136.9.RoutedEvents: Focus eventRoutedEvents: Focus event
24.136.10.RoutedEvents: Key ModifiersRoutedEvents: Key Modifiers
24.136.11.RoutedEvents: Key Press EventsRoutedEvents: Key Press Events
24.136.12.RoutedEvents: Mouse PositionRoutedEvents: Mouse Position
24.136.13.RoutedEvents Only NumbersRoutedEvents Only Numbers
24.136.14.RoutedEvents: Tunneled Key PressRoutedEvents: Tunneled Key Press
24.136.15.Routed Event DemoRouted Event Demo
24.136.16.Create RoutedCommand from InputGestureCollectionCreate RoutedCommand from InputGestureCollection